"Gallup asked Bangladeshis about their views on corruption, finding a majority saying that the level of corruption in the country is lower (73%) than it was five years ago."
Here is the complete poll information.
Results are based on face-to-face interviews with 1,000 adults in Bangladesh, aged 15 and older, conducted May 28-June 13, 2008. For results based on the total sample of national adults, one can say with 95% confidence that the maximum margin of sampling error is ±3.5 percentage points.
(Graph courtesy Gallup)